1. MicroRNA modulation combined with sunitinib as a novel therapeutic strategy for pancreatic cancer
- Author
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Henrique Faneca, Maria C. Pedroso de Lima, and Marta Passadouro
- Subjects
delivery nanosystems ,Indoles ,Cell Survival ,Biophysics ,Pharmaceutical Science ,Bioengineering ,Antineoplastic Agents ,Biology ,Transfection ,Biomaterials ,International Journal of Nanomedicine ,Pancreatic cancer ,Cell Line, Tumor ,Drug Discovery ,microRNA ,medicine ,Sunitinib ,Gene silencing ,Humans ,Pyrroles ,Gene ,Original Research ,Oligonucleotide ,Organic Chemistry ,Cancer ,Drug Synergism ,General Medicine ,Genetic Therapy ,Oligonucleotides, Antisense ,medicine.disease ,Molecular biology ,3. Good health ,Gene Expression Regulation, Neoplastic ,Pancreatic Neoplasms ,MicroRNAs ,pancreatic cancer gene therapy ,Cancer research ,Phosphatidylcholines ,albumin-associated lipoplexes ,anti-microRNAs oligonucleotides ,medicine.drug ,Carcinoma, Pancreatic Ductal - Abstract
Marta Passadouro,1,2 Maria C Pedroso de Lima,1,2 Henrique Faneca11Center for Neuroscience and Cell Biology, 2Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Coimbra, PortugalAbstract: Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive and mortal cancer, characterized by a set of known mutations, invasive features, and aberrant microRNA expression that have been associated with hallmark malignant properties of PDAC. The lack of effective PDAC treatment options prompted us to investigate whether microRNAs would constitute promising therapeutic targets toward the generation of a gene therapy approach with clinical significance for this disease. In this work, we show that the developed human serum albumin–1-palmitoyl-2-oleoyl-sn-glycero-3-ethylphosphocholine:cholesterol/anti-microRNA oligonucleotides (+/–) (4/1) nanosystem exhibits the ability to efficiently deliver anti-microRNA oligonucleotides targeting the overexpressed microRNAs miR-21, miR-221, miR-222, and miR-10in PDCA cells, promoting an almost complete abolishment of microRNA expression. Silencing of these microRNAs resulted in a significant increase in the levels of their targets. Moreover, the combination of microRNA silencing, namely miR-21, with low amounts of the chemotherapeutic drug sunitinib resulted in a strong and synergistic antitumor effect, showing that this combined strategy could be of great importance for therapeutic application in PDAC. Keywords: pancreatic cancer gene therapy, anti-microRNAs oligonucleotides, delivery nanosystems, albumin-associated lipoplexes
- Published
- 2014